30GTN - China
Your link to a world of simple and easy to use air-cooled chillers that offer out-standing performance and value. The 30GTN,GTR liquid chillers employ more than the latest advanced micro-processor controls, they utilize an ex-pandable platform that grows as your needs change. From stand-alone oper-ation to remotely monitored and oper-ated multi-chiller plants, ComfortLink controls can keep you plugged in. ComfortLink controls are fully com-municating, and are cable ready for connection to a Carrier Comfort Net-work (CCN). Occupancy scheduling, temperature and pressure read-outs, and the ComfortLink scrolling mar-quee clear language display compli-ment the standard features, linking you to a world of carefree comfort. The
30GTN,GTR chillers are built on the legendary performance of the Carrier model 30G Flotronic™ chiller and share many of the same time-proven features and technologies providing easy operation, quick installation and start-ups that save you money!
Superior temperature control equals potential for greater productivity
Whether in the classroom, on the pro-duction floor, or in the office, ComfortLink controls can help you to adapt to changing weather and busi-ness conditions. Accurate temperature control provided by the Carrier ComfortLink system helps to maintain higher levels of indoor air quality, ther-mal comfort, and productivity space. While many air-cooled chillers use only leaving fluid temperature control, the 30GTN,GTR chillers utilize leaving fluid temperature control with a standard entering fluid temperature
|compensation. This Carrier exclusive provides smart control and intelligent machine capacity staging. Unlike many chillers, Carrier model 30GTN,GTR chillers do not require constant fluid flow. The ability to operate with vari-able flow also allows building owners to realize even greater overall system energy savings in the chilled water pumping system of up to 85%, and not just at the chiller
Energy management made easy
While 30GTN,GTR chillers have many standard features such as network communications capability and temper-ature reset based on return fluid tem-perature, they can also expand as needs change. Supply temperature reset based on outside air or space temperature is as easy as adding a ther-mistor. The Energy Management option can allow you to take advantage of changing utility rate structures with easy to use load shedding, demand lim-iting and temperature reset capabilities. Reset triggered via 4 to 20 mA signal makes integrating from an existing building management system simple.
The ComfortLink™ platform can be
expanded further with the Service Option which has all of the features of the Energy Management option, along with an additional hand-held ComfortLink Navigator display, remote service connection port, and GFCI convenience outlet (60Hz only). While providing additional information in a clear language format, the Navigator display can be plugged into the unit at either the control panel or at the remote service port, allowing the service technician to operate the unit from where the maintenance or service work is being performed, thereby mini-mizing downtime to ensure the system is ready for operation in the shortest amount of time. Both the Energy Man-agement and Service Options can be factory-supplied or can be added in the field at a later date as needs change.
|Full and part load efficiency
The fully integrated ComfortLink control system maintains efficient con-trol over the compressors, unloaders, expansion valves, and condenser fans to optimize performance as conditions change. The Carrier exclusive long-stroke electronic expansion valve (EXV) operates at reduced condensing pressures, thereby allowing the control to operate the fans down to lower out-door temperatures. By utilizing valve position information, the control main-tains the highest possible evaporator pressure and minimizes the excessive superheat that conventional thermal expansion valve (TXV) systems require. Wider operating ranges equal increased efficiencies and lower installed costs.
Building design flexibility
Design and consulting engineers will appreciate the broad selection of sizes and wide operating range offered by the
30GTN,GTR chillers. With built-in dual chiller control, imaginative large tonnage systems can be easily engi-neered and controlled with smaller, eas-ier to handle modules. Modular design allows engineers to consider side by side, offset, or angled placement to fit the awkward spaces that the architect sometimes leaves for mechanical sys-tems. Or, in the case of planned expan-sion, additional cooling can be brought on-line and controlled from the same system.
In some places facility managers may find that the cash flow provided by building up large air cooled multi-chiller plants can easily offset any efficiency losses when compared to large water cooled centrifugal type chilled water plants.
|Quality and reliability
To assure long life and quality perfor-mance, every chiller (both 50 and
60Hz) is factory run tested at full load. Individual components are also tested at many levels to assure that only the best parts make it into 30GTN,GTR chillers. Long life and reliability are also a function of design. While some man-ufacturers like to talk about moving parts, Carrier’s engineers recognized the potential dangers to chiller systems caused by problems in the power distri-bution system. Low voltage and phase imbalances are but a few of the condi-tions that can hurt the compressor’s motor. Model 30G chillers were one of the first to offer ground current sensing to prevent compressor motor burn-out that would contaminate the system and potentially threaten the life of future replacement compressors. The 06E semi-hermetic compressors are built for performance and have proven themselves in commercial refrigeration equipment worldwide.
With tens of thousands of chillers operating in all corners of the world, end- users count on the reliability of Carrier
30G chillers. The Carrier China plant is an ISO 9001 regis-tered facility as are many of Carrier’s other component and assembly plants throughout the
• Simple and easy to use ComfortLink communicating controls.
• Wide operating envelope from –28 to
52°C (–20 to 125°F).
• Accurate temperature control with return fluid compensation.
• Value added features built-in; dual chiller control, reset from return.
• Superior full and part-load efficiency.
• Precise multiple-step capacity.
• Low noise operation (quieter than many screw chillers).
• Dual independent refrigerant circuits.
• Full load factory run tested.
• Wide range of sizes available.
• History of proven performance and reliability.
|The 30GTN,GTR chillers with ComfortLink control offer out-standing efficiencies (EER [Energy Effi-ciency Ratio], COP [coefficient of per-formance], and IPLV [integrated part load value]) in both full (up to 10.0 EER) and part load operation (IPLVs up to 14.7). Increased part load efficiency is provided by dual indepen-dent refrigeration circuits, suction cut-off unloading, and return fluid temper-ature compensation.|
*All features and specifications are subject to change without prior notice